Gorynia, M., J. Nowak, P. Trąpczyński, and R. Wolniak. “Does Outward FDI by Polish Multinationals Support Existing Theory? Findings from a Quantitative Study”. Economics and Business Review, vol. 1, no. 4, Dec. 2015, pp. 84-101, doi:10.18559/ebr.2015.4.6.